Extrusion forming device for processing light-weight aluminum alloy profile

Abstract

The application discloses a kind of extrusion forming devices for lightweight aluminum alloy profile processing, it is related to extrusion forming equipment technical field, including: template, the forming piece is arranged in the template, the fixed piece for fixing the forming piece is arranged on the template;In the application, the modular split structure of forming piece can quickly replace mould and core head for different section lightweight aluminum alloy profile, without overall scrapping mould, effectively reduce production and maintenance cost, the integrated structure of T-shaped shunt bridge and core head can balance the flow rate of each metal, improve the wall thickness uniformity and welding quality of hollow thin-walled profile, adapt to the high-precision forming needs of lightweight profile, while plug-in assembly mode can significantly shorten mould dismounting cycle.

Description

Technical Field

[0001] This invention relates to the field of extrusion molding equipment technology, specifically an extrusion molding device for processing lightweight aluminum alloy profiles. Background Technology

[0002] Aluminum alloy profile extrusion is a plastic processing technology in which aluminum alloy billets heated to a plastic state are placed in an extrusion cylinder, and high pressure is applied by an extrusion shaft to force the metal to flow through the mold cavity, continuously extruding profiles with a predetermined cross-sectional shape. This process can form complex hollow, multi-cavity thin-walled sections, with high material utilization, continuous metal fibers after forming, and excellent mechanical properties. It is the core manufacturing method for lightweight aluminum alloy structural parts and is widely used in new energy vehicles, rail transit, photovoltaic equipment and other fields.

[0003] Existing aluminum alloy extrusion molding dies still have room for optimization in the production of various lightweight profiles. When changing to different profile sections, the cost of replacing and maintaining the entire die is high. When forming thin-walled hollow profiles, the flow rate of the metal flow channel is not uniform enough, which can easily affect the uniformity of the profile wall thickness and the welding quality. At the same time, the die disassembly and assembly mostly adopt traditional fastening methods, resulting in long assembly and maintenance cycles, which makes it difficult to fully adapt to the high-precision and high-efficiency mass production requirements of lightweight aluminum alloy profiles. Summary of the Invention

[0004] The purpose of this invention is to address the following issues: existing aluminum alloy extrusion molding dies still have room for optimization in the production of various lightweight profiles; the cost of replacing and maintaining the entire die is high when changing profiles with different cross-sections; the flow rate uniformity of the metal channel is insufficient when molding thin-walled hollow profiles, which can easily affect the uniformity of the profile wall thickness and the welding quality; and the traditional fastening methods are mostly used for die assembly and disassembly, resulting in long assembly and maintenance cycles, making it difficult to fully adapt to the high-precision and high-efficiency mass production requirements of lightweight aluminum alloy profiles. Therefore, this invention provides an extrusion molding device for processing lightweight aluminum alloy profiles.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an extrusion molding apparatus for processing lightweight aluminum alloy profiles, comprising: a template, wherein a forming part is disposed within the template, and a fixing member for fixing the forming part is disposed on the template;

[0006] The molding part includes a mold, a molding hole is formed through the end face of the mold, a connecting hole is formed at the large diameter end of the mold, the molding part also includes a connecting post that is inserted into the connecting hole, a flow divider is fixedly connected to the end of the connecting post away from the mold, a core head is fixedly connected to each flow divider, the size of the molding hole is larger than the core head, and a positioning block is fixedly connected to the top of the flow divider.

[0007] The template has a through-hole on its end face. A limit ring is fixedly connected to the end of the through-hole away from the molded part. A positioning groove is provided at the end of the through-hole away from the limit ring. The positioning block is inserted into the positioning groove.

[0008] The fixing component includes a mounting plate, with a through-hole on the end face of the mounting plate. The through-hole is aligned and connected to the diversion hole. A plug is fixedly connected to the end of the mounting plate facing the template. The plug engages with the positioning groove. A rotating groove is formed on the outer circular surface of the mounting plate. A rotating ring is rotatably connected in the rotating groove. A locking ring is fixedly connected to the outer circular surface of the rotating ring. A locking block is fixedly connected to the end of the locking ring facing the template. A locking groove is formed on the outer circular surface of the template. The locking block engages with the locking groove.

[0009] As a further embodiment of the present invention: the mold is a convex frustum shape, the connecting holes are provided in four sets, evenly distributed at the large diameter end of the mold, the connecting posts are provided in four sets, and a set of connecting posts is inserted into each set of connecting holes, the flow divider is T-shaped, and the top of the T-shaped flow divider is an arc surface, the length of the core is twice the length of the mold, so that when the connecting posts are inserted into the connecting holes and the flow divider abuts against the mold, the core is inserted into the forming hole and is flush with the end of the mold away from the flow divider.

[0010] As a further embodiment of the present invention: the positioning block is convex in shape, the diversion hole is provided in four sets, and each set of diversion hole is provided with four sets of positioning grooves. The positioning groove is convex in shape, and the length of the positioning groove is greater than the length of the positioning block. Each set of diversion hole is provided with a set of molded parts. When the mold abuts against the limiting ring, the positioning block is fully inserted into the positioning groove and abuts against the side of the positioning groove facing the limiting ring, leaving a gap at the end of the positioning groove away from the limiting ring.

[0011] As a further embodiment of the present invention: the insert is convex in shape, and sixteen sets of inserts are provided. The length of the insert is consistent with the length of the gap left at the end of the positioning groove away from the limiting ring after the positioning block is fully inserted into the positioning groove, so that after the insert is fully inserted into the positioning groove, the mounting plate abuts against the template, and the insert abuts against the positioning block.

[0012] As a further embodiment of the present invention: the cross-section of the rotating groove is convex, the cross-section of the rotating ring is convex, the locking block is L-shaped, the locking groove is P-shaped and adapted to the L-shaped locking block, the locking groove penetrates the end of the template facing the mounting plate, and five sets of locking blocks and locking grooves are provided, evenly distributed on the end of the mounting plate facing the template.

[0013] As a further aspect of the present invention: during the process of inserting the plug into the positioning groove, multiple sets of L-shaped locking blocks are simultaneously inserted into the wide groove of each corresponding set of P-shaped locking grooves. Then, the locking ring is moved to make the L-shaped locking blocks rotate synchronously, thereby inserting the L-shaped locking blocks into the narrow groove of the P-shaped locking groove to complete the locking and limiting.

[0014] As a further aspect of the present invention: the flow divider hole is made into a convex shape by means of a limiting ring, and is adapted to the outer diameter of the convex frustum-shaped mold.

[0015] As a further embodiment of the present invention: the feed hole is provided in four groups, each group of feed holes is aligned and connected with a group of diversion holes, and the inner diameter of the diversion holes is the same as that of the feed holes. The feed hole is provided with a guide angle at the end away from the template.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, the modular split structure of the molded parts allows for quick replacement of molds and cores for lightweight aluminum alloy profiles with different cross-sections, eliminating the need for complete mold scrapping and effectively reducing production and maintenance costs. The integrated structure of the T-shaped flow divider bridge and the core can balance the flow rate of each metal stream, improve the uniformity of wall thickness and welding quality of hollow thin-walled profiles, and meet the high-precision molding requirements of lightweight profiles. At the same time, the plug-in assembly method can significantly shorten the mold disassembly and assembly cycle.

[0018] 2. In this invention, the multi-cavity diversion hole layout of the template can simultaneously form multiple lightweight aluminum alloy profiles in a single extrusion, greatly improving the efficiency of mass production. The matching structure of the limiting ring and the positioning groove can achieve precise positioning of the formed parts, avoid the offset and rotation of the formed parts during the extrusion process, and ensure the consistency of the profile cross-sectional dimensions. The convex step adaptation structure can withstand high pressure extrusion, improve the overall rigidity of the mold, and reduce forming defects such as twisting and wavy in thin-walled profiles.

[0019] 3. In this invention, the rotating locking structure of the fixing component replaces the traditional multi-bolt fastening method, realizing the quick disassembly and locking of the mold, reducing mold change time and labor intensity. The cooperation between the insert and the positioning groove can further press the formed part, compensate for the thermal expansion gap of the mold, and ensure the stability of the mold structure during extrusion. The guide angle structure of the feed hole can optimize the feeding state of aluminum material, reduce metal flow resistance, and improve the surface quality and forming efficiency of lightweight profiles. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the molded part in this invention;

[0022] Figure 3This is an exploded view of the structure of the molded part in this invention;

[0023] Figure 4 This is a schematic diagram of the template structure in this invention;

[0024] Figure 5 This is a schematic diagram of the clearance fit between the core head and the forming hole in this invention;

[0025] Figure 6 This is a schematic diagram of the fastener structure in this invention;

[0026] Figure 7 This is a cross-sectional view of the installation disk in this invention;

[0027] Figure 8 In this invention Figure 7 A schematic diagram of the structure at point A.

[0028] In the diagram: 1. Molded part; 11. Mold; 12. Molding hole; 13. Connecting hole; 14. Core head; 15. Diverter bridge; 16. Connecting column; 17. Positioning block; 2. Template; 21. Diverter hole; 22. Limiting ring; 23. Positioning groove; 3. Fixing part; 31. Mounting plate; 32. Feed hole; 33. Insert block; 34. Rotating groove; 35. Rotating ring; 36. Locking ring; 37. Locking block; 38. Locking groove. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Reference Figure 1 In this embodiment of the invention, an extrusion molding device for processing lightweight aluminum alloy profiles includes: a forming part 1, a template 2, and a fixing part 3.

[0031] Reference Figures 2 to 3The molding component 1 is the core molding unit of the mold. It adopts a split, plug-in structure, including a mold 11, molding holes 12, connecting holes 13, a core head 14, a flow divider bridge 15, connecting pillars 16, and a positioning block 17. The mold 11 is a convex-shaped frustum structure with molding holes 12 extending axially through its end face. Four sets of connecting holes 13 are provided on the large-diameter end face of the convex-shaped mold 11, evenly distributed circumferentially along the axis of the mold 11. Four sets of connecting pillars 16 are correspondingly provided, with one set of connecting pillars 16 inserted into each set of connecting holes 13. A flow divider bridge 15 is fixedly connected to the end of each set of connecting pillars 16 furthest from the mold 11. The flow divider bridge 15 has a T-shaped structure. The top of the T-shaped diversion bridge 15 is an arc-shaped structure. The four diversion bridges 15 are arranged circumferentially, and the inner ends of the four diversion bridges 15 are fixedly connected to the core head 14. The size of the forming hole 12 is larger than the outer diameter of the core head 14. The length of the core head 14 is twice the length of the mold 11. When the connecting post 16 is inserted into the connecting hole 13 until the end face of the diversion bridge 15 abuts against the large diameter end face of the mold 11, the core head 14 is fully inserted into the forming hole 12. The outer end of the core head 14 is flush with the end face of the mold 11 away from the diversion bridge 15. The top of each diversion bridge 15 is fixedly connected to a set of positioning blocks 17. The positioning blocks 17 are convex-shaped structures and are used to achieve circumferential positioning of the molded part 1.

[0032] The above solution is adopted as follows: the split plug-in structure of the molding part 1 enables the quick assembly and individual replacement of the mold 11, the flow divider bridge 15, and the core head 14; the arc top of the T-shaped flow divider bridge 15 optimizes the metal flow path and reduces flow resistance; the size and length matching of the core head 14 and the molding hole 12 ensures the molding accuracy of the inner cavity and outer wall of the profile; and the convex positioning block 17 achieves circumferential anti-rotation positioning of the molding part 1, thereby improving the mold assembly efficiency and the molding stability of thin-walled profiles.

[0033] Reference Figures 4 to 5Template 2 is the main supporting structure of the mold, and is generally disc-shaped. Four sets of flow holes 21 are axially oriented through the end face of template 2. These four sets of flow holes 21 are evenly arranged circumferentially along the axis of template 2. A limiting ring 22 is fixedly connected to the end of each flow hole 21 furthest from the molded part 1. The limiting ring 22 forms a convex step structure on the inner wall of the flow hole 21, and this step structure is adapted to the outer diameter of the convex frustum-shaped mold 11, used for axial limiting of the mold 11. A positioning groove 23 is provided at the end of the flow hole 21 furthest from the limiting ring 22. The positioning groove 23 is... The mold is U-shaped, with four sets of positioning grooves 23 in each set of flow holes 21. The four sets of positioning grooves 23 are evenly distributed around the flow holes 21. The positioning block 17 is inserted into the positioning groove 23, and the length of the positioning groove 23 is greater than the length of the positioning block 17. Each set of forming parts 1 is provided in each set of flow holes 21. When the large diameter end face of the mold 11 abuts against the limiting ring 22, the positioning block 17 is fully inserted into the positioning groove 23 and abuts against the bottom of the groove 23 on the side facing the limiting ring 22, so that the end of the positioning groove 23 away from the limiting ring 22 has a gap for accommodating the insert block 33.

[0034] The above scheme is adopted: the limiting ring 22 in the template 2 realizes the axial limiting of the molded part 1 and the adaptation to the step surface, and bears the axial reaction force during the extrusion process. The circumferential anti-rotation positioning of the molded part 1 is realized by the insertion and cooperation of the convex positioning groove 23 and the positioning block 17. The gap structure reserved in the positioning groove 23 provides the insertion space for the insertion block 33 of the fixing part 3, ensuring the coaxiality and positioning accuracy of the multi-cavity mold stacking, and avoiding the movement and deflection of the molded part 1 during the extrusion process.

[0035] Reference Figures 6 to 8The fixing component 3 is located on the feeding side of the template 2 and is used to press and fix the molded part 1 inside the template 2. It includes a mounting plate 31, a feeding hole 32, an insert block 33, a rotating groove 34, a rotating ring 35, a locking ring 36, a locking block 37, and a locking groove 38. The end face of the mounting plate 31 has four sets of feeding holes 32 that extend through the axial direction. Each set of feeding holes 32 is aligned and connected with a set of diversion holes 21. The inner diameter of the diversion holes 21 is the same as that of the feeding holes 32. The end of the feeding hole 32 away from the template 2 is... An angled guide is provided to guide the aluminum material smoothly into the diversion hole 21. Sixteen sets of insert blocks 33 are fixedly connected to the end of the mounting plate 31 facing the template 2. The insert blocks 33 have a convex structure. The length of the insert blocks 33 is the same as the length of the gap left at the end of the positioning groove 23 away from the limiting ring 22 after the positioning block 17 is fully inserted into the positioning groove 23. This ensures that after the insert blocks 33 are fully inserted into the positioning groove 23, the inner end face of the mounting plate 31 abuts against the end face of the template 2, and the end of the insert block 33 is aligned with the end of the positioning block 17. The mounting plate 31 has a rotating groove 34 on its outer circular surface. The rotating groove 34 has a convex cross-section. A rotating ring 35 is rotatably connected inside the rotating groove 34. The rotating ring 35 has a convex cross-section and is adapted to the rotating groove 34. A locking ring 36 is fixedly connected to the outer circular surface of the rotating ring 35. A locking block 37 is fixedly connected to the end of the locking ring 36 facing the template 2. The locking block 37 is L-shaped. Five sets of locking blocks 37 and locking rings 36 are provided, evenly distributed along the circumference of the mounting plate 31. The outer circular surface of 2 is provided with a locking groove 38. The locking groove 38 is P-shaped and is adapted to the L-shaped locking block 37. The locking groove 38 passes through the end of the template 2 facing the mounting plate 31. During the process of inserting the insert block 33 into the positioning groove 23, multiple sets of L-shaped locking blocks 37 are simultaneously inserted into the wide groove of each set of P-shaped locking grooves 38. Then, the locking ring 36 is moved to make the L-shaped locking blocks 37 rotate synchronously, so that the L-shaped locking blocks 37 are inserted into the narrow groove of the P-shaped locking groove 38, thus completing the axial locking limit.

[0036] The above solution is adopted: by the insertion of the insert block 33 of the fixing part 3 into the positioning groove 23, the circumferential positioning of the mounting plate 31 and the template 2 and the axial pre-pressure of the forming part 1 are realized. The rotating ring 35 and the locking ring 36 drive the L-shaped locking block 37 to rotate and engage with the P-shaped locking groove 38, realizing the quick locking and disassembly of the mold, replacing the traditional bolt fastening method. The flow resistance of aluminum material is reduced by the guide angle of the feed hole 32, improving the mold disassembly and assembly efficiency and the stability of extrusion work.

[0037] The working principle of this invention is as follows: During assembly, the molded part 1 is first pre-installed into the diversion hole 21 of the template 2. The small diameter end of the mold 11 is inserted into the diversion hole 21 with the limiting ring 22 facing it. The mold 11 is pushed axially so that the large diameter end face of the convex-shaped frustum gradually approaches the limiting ring 22 until the large diameter end face of the mold 11 is completely in contact with the end face of the limiting ring 22, thus completing the axial positioning of the mold 11. At this time, the four sets of connecting posts 16 at the end of the diversion bridge 15 are correspondingly inserted into the four sets of connecting holes 13 at the large diameter end of the mold 11. The end face of the diversion bridge 15 and the large diameter end face of the mold 11 are in contact. With the end faces of the core 14 and the core head 14 inserted into the forming hole 12, the discharge end of the core head 14 is flush with the discharge end face of the mold 11 to ensure the forming accuracy of the profile cavity. At the same time, the U-shaped positioning block 17 at the top of the diversion bridge 15 is inserted into the U-shaped positioning groove 23 at the end of the diversion hole 21. The positioning block 17 is fully inserted into the positioning groove 23 and abuts against the bottom of the groove. The remaining gap outside the positioning groove 23 is used to accommodate the insert block 33 later. The four sets of forming parts 1 are installed into the four sets of diversion holes 21 in the same way to complete the pre-installation of the forming parts 1 in the template 2.

[0038] Then, install the fixing component 3, align the mounting plate 31 with the feed side end face of the template 2, aligning the four sets of feed holes 32 with the four sets of diversion holes 21 one by one. At the same time, insert the sixteen sets of U-shaped inserts 33 into the reserved gaps of each positioning groove 23, and push the mounting plate 31 axially until the end of the insert 33 abuts against the end face of the positioning block 17. The inner end face of the mounting plate 31 is completely in contact with the end face of the template 2. At this time, the insert 33 forms an axial pressure on the positioning block 17, further restricting the molding. As part 1 moves axially, the mounting plate 31 is pushed forward, and the five sets of L-shaped locking blocks 37 on the locking ring 36 are simultaneously inserted into the wide section of the P-shaped locking groove 38 on the outer circular surface of the template 2. When the mounting plate 31 is fully fitted, the locking ring 36 is moved circumferentially, causing the rotating ring 35 to rotate smoothly in the rotating groove 34, so that the L-shaped locking blocks 37 are inserted from the wide section of the locking groove 38 into the narrow section. The step structure of the P-shaped groove is used to achieve axial locking, and the assembly and fixation of the entire mold is completed.

[0039] During extrusion, the aluminum alloy billet heated to a plastic state enters through the feed hole 32 of the mounting plate 31. The guide angle at the end of the feed hole 32 guides the high-temperature aluminum material to flow smoothly and evenly into the diversion hole 21, reducing feed impact and eddy current. After entering the diversion hole 21, the aluminum material is divided into multiple metal streams by the T-shaped diversion bridge 15. The multiple metal streams converge in the welding chamber between the diversion bridge 15 and the die 11 and are re-welded under the extrusion pressure. Then, it wraps around the core head 14 and enters the forming hole 12. Through the cavity between the inner wall of the forming hole 12 and the outer wall of the core head 14, it is continuously extruded into a lightweight aluminum alloy profile with an inner cavity.

[0040] During the extrusion process, the limiting ring 22 bears the axial reaction force transmitted by the mold 11, restricting the mold 11 from moving towards the discharge side. The cooperation between the convex positioning block 17 and the positioning groove 23 restricts the circumferential rotation of the molded part 1, ensuring the positional accuracy of the profile section. The insert block 33 continuously presses against the positioning block 17 to compensate for the gap caused by the thermal expansion of the mold and prevent the molded part 1 from loosening. The rotating snap-fit ​​structure of the locking ring 36 and the locking groove 38 bears the overall axial reaction force, ensuring the integrity of the multi-layer mold structure and preventing the mold from opening under high pressure.

[0041] When changing or repairing the mold, the locking ring 36 is reversed so that the L-shaped locking block 37 moves from the narrow section of the locking groove 38 back to the wide section. The mounting plate 31 can then be pulled out axially to release the pressure on the molded part 1. The molded part 1 can then be removed from the diversion hole 21 and the mold 11, diversion bridge 15, or core head 14 can be replaced separately without disassembling the entire mold body, which greatly shortens the mold changing and maintenance time.

[0042] With the modular split structure of the molding part 1, the mold 11 and the core head 14 can be quickly replaced for lightweight aluminum alloy profiles with different cross sections without scrapping the entire mold, effectively reducing production and maintenance costs. The integrated structure of the T-shaped flow divider bridge 15 and the core head 14 can balance the flow rate of each metal stream, improve the wall thickness uniformity and welding quality of the hollow thin-walled profile, and adapt to the high-precision molding requirements of lightweight profiles. At the same time, the plug-in assembly method can significantly shorten the mold disassembly and assembly cycle.

[0043] Through the multi-cavity diversion hole 21 layout of the template 2, multiple lightweight aluminum alloy profiles can be formed in a single extrusion, which greatly improves the efficiency of mass production. The matching structure of the limiting ring 22 and the positioning groove 23 can achieve precise positioning of the formed part 1, avoid the offset and rotation of the formed part 1 during the extrusion process, and ensure the consistency of the profile cross-sectional dimensions. The convex step adaptation structure can withstand high pressure extrusion, improve the overall rigidity of the mold, and reduce forming defects such as twisting and wavy thin-walled profiles.

[0044] The rotating locking structure of the fastener 3 replaces the traditional multi-bolt fastening method, enabling quick disassembly and locking of the mold, reducing mold change time and labor intensity. The cooperation between the insert block 33 and the positioning groove 23 can further press the molded part 1, compensate for the mold thermal expansion gap, and ensure the stability of the mold structure during extrusion. The guide angle structure of the feed hole 32 can optimize the aluminum material feeding state, reduce metal flow resistance, and improve the surface quality and forming efficiency of lightweight profiles.

[0045] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An extrusion forming apparatus for processing lightweight aluminum alloy profiles, comprising: Template (2), characterized in that a forming part (1) is provided inside the template (2), and a fixing part (3) for fixing the forming part (1) is provided on the template (2); The molding part (1) includes a mold (11), a molding hole (12) is provided through the end face of the mold (11), a connecting hole (13) is provided at the large diameter end of the mold (11), the molding part (1) also includes a connecting post (16) inserted into the connecting hole (13), a diversion bridge (15) is fixedly connected to the end of the connecting post (16) away from the mold (11), and a core head (14) is fixedly connected to each diversion bridge (15), the size of the molding hole (12) is larger than the core head (14), and a positioning block (17) is fixedly connected to the top of the diversion bridge (15). The template (2) has a through-hole (21) on its end face. A limiting ring (22) is fixedly connected to one end of the through-hole (21) away from the molded part (1). A positioning groove (23) is provided at one end of the through-hole (21) away from the limiting ring (22). The positioning block (17) is inserted into the positioning groove (23). The fixing component (3) includes a mounting plate (31), with a feed hole (32) through the end face of the mounting plate (31). The feed hole (32) is aligned and connected to the diversion hole (21). A plug (33) is fixedly connected to one end of the mounting plate (31) facing the template (2). The plug (33) is inserted into the positioning groove (23). A rotating groove (34) is opened on the outer circular surface of the mounting plate (31). A rotating ring (35) is rotatably connected in the rotating groove (34). A locking ring (36) is fixedly connected to the outer circular surface of the rotating ring (35). A locking block (37) is fixedly connected to one end of the locking ring (36) facing the template (2). A locking groove (38) is opened on the outer circular surface of the template (2). The locking block (37) is engaged with the locking groove (38).

2. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 1, characterized in that, The mold (11) is a convex frustum shape. There are four sets of connecting holes (13) evenly distributed at the large diameter end of the mold (11). There are four sets of connecting posts (16), and a set of connecting posts (16) is inserted into each set of connecting holes (13). The diversion bridge (15) is T-shaped, and the top of the T-shaped diversion bridge (15) is an arc surface. The length of the core (14) is twice the length of the mold (11). When the connecting post (16) is inserted into the connecting hole (13) and the diversion bridge (15) abuts against the mold (11), the core (14) is inserted into the forming hole (12) and is flush with the end of the mold (11) away from the diversion bridge (15).

3. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 1 or 2, characterized in that, The positioning block (17) is convex in shape. The diversion hole (21) is provided with four sets. Each diversion hole (21) is provided with four sets of positioning grooves (23). The positioning groove (23) is convex in shape. The length of the positioning groove (23) is greater than the length of the positioning block (17). Each diversion hole (21) is provided with a set of molding parts (1). When the mold (11) abuts against the limiting ring (22), the positioning block (17) is fully inserted into the positioning groove (23) and abuts against the side of the positioning groove (23) facing the limiting ring (22), so that the end of the positioning groove (23) away from the limiting ring (22) has a gap.

4. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 3, characterized in that, The insert (33) is convex in shape, and there are sixteen sets of inserts (33). The length of the insert (33) is the same as the length of the gap left at the end of the positioning groove (23) away from the limiting ring (22) after the positioning block (17) is fully inserted into the positioning groove (23). After the insert (33) is fully inserted into the positioning groove (23), the mounting plate (31) abuts against the template (2), and the insert (33) abuts against the positioning block (17).

5. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 1, characterized in that, The cross-section of the rotating groove (34) is convex, the cross-section of the rotating ring (35) is convex, the locking block (37) is L-shaped, the locking groove (38) is P-shaped and adapted to the L-shaped locking block (37), the locking groove (38) penetrates the template (2) at one end facing the mounting plate (31), and the locking block (37) and the locking groove (38) are each provided in five sets, evenly distributed at one end of the mounting plate (31) facing the template (2).

6. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 5, characterized in that, During the process of inserting the insert (33) into the positioning groove (23), multiple sets of L-shaped locking blocks (37) are simultaneously inserted into the wide groove of each corresponding set of P-shaped locking grooves (38). Then, the locking ring (36) is moved to make the L-shaped locking blocks (37) rotate synchronously, so that the L-shaped locking blocks (37) are inserted into the narrow groove of the P-shaped locking groove (38) to complete the locking limit.

7. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 1, characterized in that, The limiting ring (22) makes the inside of the diversion hole (21) convex, and it matches the outer diameter of the convex frustum mold (11).

8. The extrusion forming apparatus for lightweight aluminum alloy profile processing according to claim 1, characterized in that, The feed hole (32) is provided in four groups. Each group of feed holes (32) is aligned and connected with a group of diversion holes (21). The inner diameter of the diversion hole (21) is the same as that of the feed hole (32). The feed hole (32) is provided with a guide angle at the end away from the template (2).

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